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Electromagnetic Waves — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Waves1 Mark
Question
Two opposite charged particles oscillate about their mean equilibrium position in free space, with a frequency of $10^9 \ Hz.$ The wavelength of the corresponding electromagnetic wave produced is $.........:$
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Answer

Electromagnetic wave $V = 3\times 10^8m/s$
Given frequency $(f) = 10^9Hz$
$\text{V}=\text{f}\lambda$
$\lambda=\frac{\text{V}}{\text{f}}$
$=\frac{3 \times 10^8} {10^9}$
$​= 0.3m$

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